The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Apr. 25, 2003
Applicants:
Alexander Pinkowski, Heidelberg, DE;
Michael Wittkampf, Dossenheim, DE;
Inventors:
Alexander Pinkowski, Heidelberg, DE;
Michael Wittkampf, Dossenheim, DE;
Assignee:
Prominent Dosiertechnik GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/333 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fluoride-sensitive electrode having a tubular electrode shaft, a lanthanum fluoride crystal, which closes the end of the electrode shaft, an internal electrolyte sealed between the lanthanum fluoride crystal and a closure in the electrode shaft, and a contact wire which dips into the internal electrolyte, wherein the internal electrolyte has a pH of ≧9.0 and a fluoride concentration of ≧0.1 M. The invention also includes the method of using the electrode to determine fluoride ion concentration.